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dc.creatorBrigandt, Ingoen_US
dc.date.accessioned2012-05-10T13:10:29Z
dc.date.available2012-05-10T13:10:29Z
dc.date.created2011-11-23en_US
dc.date.issued2012-05-10
dc.identifier.otherembryo:124921en_US
dc.identifier.urihttp://hdl.handle.net/10776/1754
dc.description.abstractHomology is a central concept of comparative and evolutionary biology, referring to the presence of the same bodily parts (e.g., morphological structures) in different species. The existence of homologies is explained by common ancestry, and according to modern definitions of homology, two structures in different species are homologous if they are derived from the same structure in the common ancestor. Homology has traditionally been contrasted with analogy, the presence of similar traits in different species not necessarily due to common ancestry but due to a similar function or convergent evolution resulting from similar selective pressure in different species. (A more recent contrastive notion is homoplasy, the presence of similar traits in different species without common ancestry, i.e., as an instance of parallel evolution.) This sounds straightforward, but in fact the homology concept has a rich history and currently is the subject of extensive theoretical reflection, resulting in different contemporary approaches to homology.en_US
dc.format.mediumtext/xhtmlen_US
dc.language.isoengen_US
dc.publisherArizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia.en_US
dc.relation.ispartofEmbryo Project Encyclopediaen_US
dc.rights© Arizona Board of Regentsen_US
dc.subject.lcshHomology (Biology)en_US
dc.titleEssay: Homologyen_US
dc.title.alternativeHomologyen_US
dc.typeTexten_US
dc.rights.licenseLicensed as Creative Commons Attribution-NonCommercial-Share Alike 3.0 Unported (CC BY-NC-SA 3.0) http://creativecommons.org/licenses/by-nc-sa/3.0/
dc.subject.embryoProcessesen_US
dc.subject.tagHomologyen_US
dc.subject.tagMorphologyen_US
dc.description.typeEssays and Thesesen_US
dc.date.createdstandard2011-11-23


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